Record mintages for nickels were set in this and the following year, as the American economy boomed. The five-cent piece enjoyed far greater utility in 1906 than it does today, opening the door to countless items, services and entertainments.
The 1906 nickel is common across all grades, including gems. The technical and aesthetic qualities of this date vary widely, and there's no reason to settle for a mediocre example.
Minor repunchings of the date abound, as so many dies were needed to produce this huge mintage. These varieties are too minor to elicit general interest.